Managers will be allowed one challenge through a game's first six innings and two from the seventh inning until the game's completion. A crew at MLB.com's headquarters in New York City will review each challenged call.

"I think it can be done in a way where it's not slowing the game down," Bochy said.

Bochy said that he wanted to study the plan, which still faces approval from club owners in November, before making a final judgment. Bochy intends to discuss the proposal with Giants president Larry Baer, who attended Wednesday's replay presentation.

Still, Bochy's initial reaction was positive.

"I do like the fact that we're going to have the chance to review some plays," he said. "If this happens, I think it'll be good for the game."

Bochy surmised that umpires will approve of this system, pointing out that they don't want to live with the burden of having made an incorrect call.

"They're doing the best job they can," he said.

Bochy noted that a more extensive replay system could enhance fan interest, since spectators seem to get excited over the current system of video reviews of home run calls.

Chris Haft is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.